williams



Patented Nov. 29, I898.

-s. m. VAUCLAIN.

VALVE MOTION.

(Application filed Mar. 28, 1898.)

2 Sheets-Sheet 1.

('No Model.)

n uonms PtrsRs ca. PHOTO-LUNG.- wAsumnYou, n. c.

No. 65,202. Patented'Nov. 29, I898.

S. M. VAUCLAIN.

VALVE MOTION.

(Application filed Mar. 28, 1898.) (No Model.) 2 Sheets-Sheet 2:

' UNITED STATES FFICEE.

PATENT SAMUEL M. VAUCLAIN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HIMSELF, GEORGE BURNHAM, EDIVARD H. WVILLIAMS, \VILLIAM P. HENS- ZEY, JOHN H. CONVERSE, WILLIAM L. AUSTIN, ALBA B. JOHNSON, AND GEORGE BURNHAM, JR, OF SAME PLACE.

VALVE-MOTION.

SPEGIFIGATIQN forming part of Letters Patent No. 615,202, dated November 29, 1898. Application filed March 28, 1898. Serial No. 675,890. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL M. VAUCLAIN, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Valve-Motions, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof.

This invention relates to the valve motion or mechanism for operating and controlling the valve of the general character of that commonly employed in locomotives.

The object of the invention is to improve the construction and arrangement of the valve-motion with especial reference to its application to a structure in which some parts of the mechanismas, for example, the parts carried by the engine-fram eare capable of movement to a limited extent with respect to some of the other partsas, forv example, the parts which are supported directly upon the axle. It is obvious that in such a structure as that just referred to the rise and fall of the engine-frame with respect to the axles of the truck and to the parts directly supported thereby might affect the action of the valve mechanism, as by disturbing the cut-off, and it is with especial reference to the prevention of such an undesirable result that the present improvement has been devised,

The nature of the invention will be more fully explained hereinafter with reference to the embodiment of the invention, which is shown in the accompanying drawings.

In said drawings, Figure 1 is a view in side elevation of a portion of a combination steammotor car to which the improved valve-motion is applied, the truck being represented partly in section and some parts being indicated by dotted lines. Fig. 2 is a view in side elevation and on a larger scale of the valvemotion shown in Fig. 1, and Fig. 3 is a view in front elevation of parts shown in Fig. 2 with some parts in section.

In the structure shown in Fig. 1, which has been chosen for illustration merely as a matter of convenience and for the purpose of enand a leg G abling the natureof the invention to be more clearly understood, the body A of the car is represented as inclosing the boiler C, while the latter rests directly upon the truck-frame D, in which are mounted the yielding bearings E of the axles F. The cylinder Gis represented as carried by the truck or engineframe D, and as a consequence the valve-rod G must partake of the vertical movements of said frame with respect to the truck-axles.

The driving-axle F carries the usual eccentrics H H and also supports a portion of the valve mechanism by means of a suitable frame or casting having two arms or members I and I. This frame may extend from side to side of the truck, supporting at each side like parts of the two sets of valve mechanism; but as said sets of valve mechanism are alike it has been necessary to show and describe herein only one set and that portion of the frame which supports the same. The llflselipk J at each side is located directly above thedriving axle F, so that the motion of that member or part of the valve-rod which is connected thereto is in a vertical direction. The ends of the reverse-lever J are separately connected to the eccentric-straps by eccentricrods H H, substantially as usual, and the reverse-link is also connected substantially as usual by a rod K to the reversing-lever K.

The valve-rod C, as will be observed by reference to the drawings, is connected to the reverse-link by a rocker L, which is mounted in the arm I of the frame, above referred to,

the rocker L is provided with a block Z, which travels freely in the vertical slot g of a crosshead 9, to which the valve-rod is secured, so that the engine-frame can rise or fall with respect to the axles, carrying with it the cylinder and valve-rod G, without disturbing the cut-off of the valve. The said cross-head 9 slides freely in suitable ways 01 (Z, which are provided for it on the engine-frame. The

lower end of the leg G is connected to the other arm of the rocker L, and its upper end carries a block g on which the reverse-link slides, and is steadied and directed by an The lower or vertical arm of J arm 1*, which is pivoted to said block g at one end and at the other is pivoted to the arm I of the frame above referred to. The leg G is also made adjustable in length by means of a turnbuckle g or equivalent device. It will be observed that the leg G is at an angle with the valve-rod O.

' The arm I may be provided with an extension 2', which is received in a guide 0, secured to the boiler C, so that the frame is steadied and braced.

By the relative arrangement and combination of parts substantially as in the manner described herein it will be obvious that a limited relative movement of some parts of the mechanism with respect to other parts can take place without aitecting the action of the valve. It will be understood also that the invention can be embodied in other arrangements and applied to other structures than the particular arrangement and structure herein referred to and is not to be limited to the precise construction and arrangement shown.

I claim as my invention 1. In a valve-motion, the combination of a driving-shaft having eccentrics thereon, a reverse-link above the axle and connected to said eccentrics, a valve-rod, a leg at an angle with said rod and connected to the reverselink, and a rocker connecting said valve-rod and leg, substantially as shown and described.

2. In a valve-motion, the combination of a driving-shaft having eccentrics thereon, a reverse-link above the axle and connected to said eccentrics, a valve-rod, a leg at an angle with said rod and connected to the reverselink, a rocker connecting said rod and leg, and a substantially horizontal, pivoted arm, pivotally connected to the extremity of said leg, substantially as shown and described.

3. In a valve-motion, the combination of a driving shaft or axle having eccentrics thereon, a reverse-link connected to said eccentries, a valve-rod having a slotted cross-head and a rocker connected on one side to said slotted cross-head and on the other side to said reverse-link, substantially as shown and described.

4. In a valve-motion, the combination of a driving shaft or axle having eccentrics thereon, a reverse-link above the axle and connected to said eccentrics, a valve-rod having a slotted cross-head, a leg at an angle with said rod and connected to the reverse-link, and a rocker connected on one side to said leg and on the other side engaging the said slotted cross-head, substantially as shown and described.

5. The combination of a truck-frame, a cylinder carried by said truck-frame,an axle having yielding hearings in said truck-framc, a valve-rod having a slotted cross-head, a rocker supported with said axle and engaging said slotted cross-head, and valve-actuati n g mechanism connected to said rocker, substantially as shown and described.

6. The combination of a truck-frame, acylinder carried by said truek-frame,an axle having yielding bearings in said truck-frame, a valve-rod having a slotted cross-head, ways for said cross-head carried by said truckframe, a rocker supported with said axle and engaging said slotted cross-head and valve-aetuating mechanism connected to said rocker, substantially as shown and described.

This specification signed and witnessed this 24th day of March, A D. 1898.

SAMUEL M. VAUCLAIN.

In presence of- J AS. H. M. HAYES, FRED W OOLLVEN. 

